/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:15:42,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:15:42,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:15:42,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:15:42,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:15:42,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:15:42,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:15:42,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-12 17:15:42,814 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:15:42,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:15:42,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:15:42,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:15:42,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:15:42,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:15:42,817 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:15:42,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:15:42,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:15:42,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:15:42,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:15:42,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:15:42,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:15:42,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:15:42,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:15:42,818 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:15:42,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:15:42,818 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:15:42,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:15:42,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:15:42,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:15:42,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:15:42,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:15:42,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:15:42,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:15:42,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:15:42,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:15:42,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:15:42,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:15:42,820 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:15:42,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:15:42,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:15:43,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:15:43,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:15:43,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:15:43,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:15:43,096 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:15:43,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i [2021-06-12 17:15:43,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8379648b4/a132934429584e70a46f932333031ff4/FLAG3cd82a810 [2021-06-12 17:15:43,653 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:15:43,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i [2021-06-12 17:15:43,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8379648b4/a132934429584e70a46f932333031ff4/FLAG3cd82a810 [2021-06-12 17:15:44,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8379648b4/a132934429584e70a46f932333031ff4 [2021-06-12 17:15:44,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:15:44,177 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:15:44,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:15:44,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:15:44,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:15:44,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:15:44" (1/1) ... [2021-06-12 17:15:44,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e6d74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44, skipping insertion in model container [2021-06-12 17:15:44,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:15:44" (1/1) ... [2021-06-12 17:15:44,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:15:44,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:15:44,317 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i[949,962] [2021-06-12 17:15:44,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:15:44,463 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:15:44,471 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i[949,962] [2021-06-12 17:15:44,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:15:44,539 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:15:44,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44 WrapperNode [2021-06-12 17:15:44,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:15:44,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:15:44,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:15:44,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:15:44,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44" (1/1) ... [2021-06-12 17:15:44,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44" (1/1) ... [2021-06-12 17:15:44,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:15:44,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:15:44,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:15:44,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:15:44,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44" (1/1) ... [2021-06-12 17:15:44,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44" (1/1) ... [2021-06-12 17:15:44,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44" (1/1) ... [2021-06-12 17:15:44,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44" (1/1) ... [2021-06-12 17:15:44,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44" (1/1) ... [2021-06-12 17:15:44,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44" (1/1) ... [2021-06-12 17:15:44,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44" (1/1) ... [2021-06-12 17:15:44,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:15:44,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:15:44,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:15:44,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:15:44,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:15:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:15:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 17:15:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:15:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:15:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-12 17:15:44,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-12 17:15:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-12 17:15:44,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-12 17:15:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-12 17:15:44,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-12 17:15:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:15:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 17:15:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:15:44,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:15:44,650 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 17:15:44,929 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:15:44,929 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-12 17:15:44,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:15:44 BoogieIcfgContainer [2021-06-12 17:15:44,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:15:44,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:15:44,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:15:44,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:15:44,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:15:44" (1/3) ... [2021-06-12 17:15:44,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0059f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:15:44, skipping insertion in model container [2021-06-12 17:15:44,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:15:44" (2/3) ... [2021-06-12 17:15:44,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0059f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:15:44, skipping insertion in model container [2021-06-12 17:15:44,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:15:44" (3/3) ... [2021-06-12 17:15:44,935 INFO L111 eAbstractionObserver]: Analyzing ICFG safe007_tso.opt.i [2021-06-12 17:15:44,939 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:15:44,939 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:15:44,939 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:15:44,939 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:15:44,968 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,968 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,968 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,968 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,968 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,968 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,968 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,968 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,969 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,969 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,969 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,969 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,969 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,969 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,970 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,970 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,970 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,970 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,970 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,970 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,970 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,970 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,970 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,971 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,971 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,971 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,971 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,973 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,973 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,973 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,973 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,976 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,977 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,977 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,977 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,979 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,979 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:15:44,980 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 17:15:44,992 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 17:15:45,003 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:15:45,003 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:15:45,003 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:15:45,003 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:15:45,003 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:15:45,004 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:15:45,004 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:15:45,004 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:15:45,010 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 85 transitions, 185 flow [2021-06-12 17:15:45,428 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:45,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:45,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-12 17:15:45,482 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:15:45,483 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:15:45,483 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:15:45,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:15:45,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1408065288, now seen corresponding path program 1 times [2021-06-12 17:15:45,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:15:45,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675106754] [2021-06-12 17:15:45,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:15:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:15:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:15:45,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:15:45,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675106754] [2021-06-12 17:15:45,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675106754] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:15:45,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:15:45,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:15:45,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270055218] [2021-06-12 17:15:45,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:15:45,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:15:45,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:15:45,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:15:45,951 INFO L87 Difference]: Start difference. First operand has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:15:46,271 INFO L93 Difference]: Finished difference Result 12224 states and 42408 transitions. [2021-06-12 17:15:46,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:15:46,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-12 17:15:46,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:15:46,311 INFO L225 Difference]: With dead ends: 12224 [2021-06-12 17:15:46,311 INFO L226 Difference]: Without dead ends: 4629 [2021-06-12 17:15:46,313 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 204.3ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-12 17:15:46,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2021-06-12 17:15:46,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 4629. [2021-06-12 17:15:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4628 states have (on average 3.3854796888504755) internal successors, (15668), 4628 states have internal predecessors, (15668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 15668 transitions. [2021-06-12 17:15:46,532 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 15668 transitions. Word has length 50 [2021-06-12 17:15:46,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:15:46,535 INFO L482 AbstractCegarLoop]: Abstraction has 4629 states and 15668 transitions. [2021-06-12 17:15:46,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:46,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 15668 transitions. [2021-06-12 17:15:46,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-12 17:15:46,548 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:15:46,549 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:15:46,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:15:46,549 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:15:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:15:46,552 INFO L82 PathProgramCache]: Analyzing trace with hash -873664247, now seen corresponding path program 1 times [2021-06-12 17:15:46,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:15:46,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170119308] [2021-06-12 17:15:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:15:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:15:46,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:15:46,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:15:46,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170119308] [2021-06-12 17:15:46,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170119308] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:15:46,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:15:46,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:15:46,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588503362] [2021-06-12 17:15:46,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:15:46,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:15:46,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:15:46,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:15:46,664 INFO L87 Difference]: Start difference. First operand 4629 states and 15668 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:46,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:15:46,855 INFO L93 Difference]: Finished difference Result 5189 states and 17401 transitions. [2021-06-12 17:15:46,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:15:46,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-12 17:15:46,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:15:46,882 INFO L225 Difference]: With dead ends: 5189 [2021-06-12 17:15:46,882 INFO L226 Difference]: Without dead ends: 4209 [2021-06-12 17:15:46,883 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 157.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:15:46,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2021-06-12 17:15:46,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 4209. [2021-06-12 17:15:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 4208 states have (on average 3.3583650190114067) internal successors, (14132), 4208 states have internal predecessors, (14132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:46,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 14132 transitions. [2021-06-12 17:15:46,993 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 14132 transitions. Word has length 52 [2021-06-12 17:15:46,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:15:46,994 INFO L482 AbstractCegarLoop]: Abstraction has 4209 states and 14132 transitions. [2021-06-12 17:15:46,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:46,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 14132 transitions. [2021-06-12 17:15:47,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-12 17:15:47,003 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:15:47,004 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:15:47,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:15:47,004 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:15:47,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:15:47,009 INFO L82 PathProgramCache]: Analyzing trace with hash -504396568, now seen corresponding path program 1 times [2021-06-12 17:15:47,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:15:47,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259799185] [2021-06-12 17:15:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:15:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:15:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:15:47,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:15:47,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259799185] [2021-06-12 17:15:47,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259799185] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:15:47,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:15:47,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:15:47,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922100425] [2021-06-12 17:15:47,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:15:47,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:15:47,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:15:47,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:15:47,199 INFO L87 Difference]: Start difference. First operand 4209 states and 14132 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:15:47,389 INFO L93 Difference]: Finished difference Result 5579 states and 18608 transitions. [2021-06-12 17:15:47,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:15:47,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-12 17:15:47,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:15:47,403 INFO L225 Difference]: With dead ends: 5579 [2021-06-12 17:15:47,403 INFO L226 Difference]: Without dead ends: 2639 [2021-06-12 17:15:47,403 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 182.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:15:47,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2021-06-12 17:15:47,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2639. [2021-06-12 17:15:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 2638 states have (on average 3.262699014404852) internal successors, (8607), 2638 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:47,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 8607 transitions. [2021-06-12 17:15:47,455 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 8607 transitions. Word has length 54 [2021-06-12 17:15:47,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:15:47,456 INFO L482 AbstractCegarLoop]: Abstraction has 2639 states and 8607 transitions. [2021-06-12 17:15:47,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:47,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 8607 transitions. [2021-06-12 17:15:47,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 17:15:47,461 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:15:47,461 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:15:47,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 17:15:47,462 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:15:47,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:15:47,463 INFO L82 PathProgramCache]: Analyzing trace with hash 822730279, now seen corresponding path program 1 times [2021-06-12 17:15:47,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:15:47,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655597710] [2021-06-12 17:15:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:15:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:15:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:15:47,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:15:47,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655597710] [2021-06-12 17:15:47,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655597710] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:15:47,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:15:47,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:15:47,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194249565] [2021-06-12 17:15:47,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:15:47,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:15:47,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:15:47,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:15:47,595 INFO L87 Difference]: Start difference. First operand 2639 states and 8607 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:47,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:15:47,741 INFO L93 Difference]: Finished difference Result 3559 states and 11553 transitions. [2021-06-12 17:15:47,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:15:47,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-12 17:15:47,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:15:47,748 INFO L225 Difference]: With dead ends: 3559 [2021-06-12 17:15:47,748 INFO L226 Difference]: Without dead ends: 1729 [2021-06-12 17:15:47,749 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 141.8ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-12 17:15:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-06-12 17:15:47,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1729. [2021-06-12 17:15:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1728 states have (on average 3.1574074074074074) internal successors, (5456), 1728 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 5456 transitions. [2021-06-12 17:15:47,778 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 5456 transitions. Word has length 57 [2021-06-12 17:15:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:15:47,778 INFO L482 AbstractCegarLoop]: Abstraction has 1729 states and 5456 transitions. [2021-06-12 17:15:47,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:47,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 5456 transitions. [2021-06-12 17:15:47,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-12 17:15:47,782 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:15:47,782 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:15:47,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 17:15:47,785 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:15:47,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:15:47,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1119585077, now seen corresponding path program 1 times [2021-06-12 17:15:47,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:15:47,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175840890] [2021-06-12 17:15:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:15:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:15:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:15:47,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:15:47,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175840890] [2021-06-12 17:15:47,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175840890] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:15:47,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:15:47,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:15:47,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569759697] [2021-06-12 17:15:47,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:15:47,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:15:47,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:15:47,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:15:47,882 INFO L87 Difference]: Start difference. First operand 1729 states and 5456 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:48,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:15:48,001 INFO L93 Difference]: Finished difference Result 1569 states and 4928 transitions. [2021-06-12 17:15:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 17:15:48,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-06-12 17:15:48,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:15:48,001 INFO L225 Difference]: With dead ends: 1569 [2021-06-12 17:15:48,002 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 17:15:48,002 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:15:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 17:15:48,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 17:15:48,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:48,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 17:15:48,002 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-06-12 17:15:48,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:15:48,002 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 17:15:48,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:15:48,003 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 17:15:48,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 17:15:48,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 17:15:48,004 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:15:48,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:15:48 BasicIcfg [2021-06-12 17:15:48,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:15:48,006 INFO L168 Benchmark]: Toolchain (without parser) took 3828.92 ms. Allocated memory was 183.5 MB in the beginning and 355.5 MB in the end (delta: 172.0 MB). Free memory was 145.8 MB in the beginning and 227.9 MB in the end (delta: -82.1 MB). Peak memory consumption was 90.7 MB. Max. memory is 8.0 GB. [2021-06-12 17:15:48,006 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory is still 164.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:15:48,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.59 ms. Allocated memory is still 183.5 MB. Free memory was 145.6 MB in the beginning and 143.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2021-06-12 17:15:48,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.73 ms. Allocated memory is still 183.5 MB. Free memory was 143.8 MB in the beginning and 141.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:15:48,007 INFO L168 Benchmark]: Boogie Preprocessor took 12.35 ms. Allocated memory is still 183.5 MB. Free memory was 141.5 MB in the beginning and 140.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 17:15:48,007 INFO L168 Benchmark]: RCFGBuilder took 339.58 ms. Allocated memory is still 183.5 MB. Free memory was 140.4 MB in the beginning and 116.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:15:48,008 INFO L168 Benchmark]: TraceAbstraction took 3074.05 ms. Allocated memory was 183.5 MB in the beginning and 355.5 MB in the end (delta: 172.0 MB). Free memory was 116.3 MB in the beginning and 227.9 MB in the end (delta: -111.5 MB). Peak memory consumption was 61.5 MB. Max. memory is 8.0 GB. [2021-06-12 17:15:48,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory is still 164.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 360.59 ms. Allocated memory is still 183.5 MB. Free memory was 145.6 MB in the beginning and 143.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.73 ms. Allocated memory is still 183.5 MB. Free memory was 143.8 MB in the beginning and 141.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.35 ms. Allocated memory is still 183.5 MB. Free memory was 141.5 MB in the beginning and 140.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 339.58 ms. Allocated memory is still 183.5 MB. Free memory was 140.4 MB in the beginning and 116.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3074.05 ms. Allocated memory was 183.5 MB in the beginning and 355.5 MB in the end (delta: 172.0 MB). Free memory was 116.3 MB in the beginning and 227.9 MB in the end (delta: -111.5 MB). Peak memory consumption was 61.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3001.5ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 84.1ms, AutomataDifference: 1095.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 424.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 537 SDtfs, 904 SDslu, 1764 SDs, 0 SdLazy, 137 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 134.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 812.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9333occurred in iteration=0, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 401.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.5ms SsaConstructionTime, 144.0ms SatisfiabilityAnalysisTime, 662.2ms InterpolantComputationTime, 271 NumberOfCodeBlocks, 271 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 1290 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...